clever FFmpeg-GUI, small FFmpeg UI, fully portable, no installation.

[ProWo]

At scene changes, tests:
When I use treshold 0,35, I get 20 chapters for the 15 minute F1 sample, 5 of them between minute 12:53 and 14:34
The situation is similar with 50 to 130-minute videos. There are always sections with many chapters within a few seconds and sections without chapters for 15 to 20 minutes, even though this is not the case in the video.
Here, we would need two additional values for an approximate minimum and maximum distance between two chapters.

Scene detection is performed by ffmpeg itself.
I don't know why such strange intervals are detected.
However, I will implement an minimum interval limit depending on the duration.

[ProWo]

The values and settings in Lossless Crop remain till restart of the app. Even a different source file will not reset them.

Will be fixed.

When you open Crop, you see the button "Ok, done" (without a cropped frame). Normally, you hide it till a crop has been found.

This is intended. You can use the button to close the window. If all crop values are 0, nothing is cropped. This is the same as abort with Return.

Pad width tooltip text "Only even values grater than the frame width produce a Pillarbox (black bars left & right)."
Pad height tooltip text "Only even values grater than the frame height produce a Letterbox (black bars at top & bottom)."
How about using "Frame rate (fps)" as the frame text?
The tooltip could be "Target video frame rate in frames per second (fps)"

Will be changed.

[ingsoc]

maybe I am blind or something but... in the actual version 3.4.7 where is it the classic 'various/Change DAR' section ?

[Findu]

On the Main page, Lossless changes...


[Attachment 89447 - Click to enlarge]

Apart from Scan for errors, all other various options are lossless changes.

[Findu]

@ ProWo

You have PM

[ProWo]

You have PM

Good idea, will change this.

[videoAI]

How do I add a delay to an ass sub in an mkv container?
Clever isn't taking any input in the sub delay field !!


[Attachment 89490 - Click to enlarge]

[ProWo]

How do I add a delay to an ass sub in an mkv container?
Clever isn't taking any input in the sub delay field !!

I have never tried to delay a subtitle stream. I need to test whether that is possible.

[videoAI]

This is the part I am trying to sync the sub to the audio [A/V are sync'd]
Sample attached ..

How do I add a delay to an ass sub?

I have never tried to delay a subtitle stream. I need to test whether that is possible.

[videoAI]

FFmpeg command to add a delay to ASS subtitles in an MKV container:

ffmpeg -i input.mkv -i input.ass -map 0 -map 1 -c copy -c:s ass -metadata:s:s:0 delay=1000 output.mkv

Key breakdown:
- `-i input.mkv`: Input video file
- `-i input.ass`: Input subtitle file
- `-map 0`: Map all streams from first input
- `-map 1`: Map subtitle stream
- `-c copy`: Copy video/audio streams without re-encoding
- `-c:s ass`: Ensure subtitle codec is ASS
- `-metadata:s:s:0 delay=1000`: Add 1000 millisecond (1 second) delay to first subtitle stream
- `output.mkv`: Output file

Delay values are in milliseconds. Use positive values to delay subtitles, negative to advance them.

I have never tried to delay a subtitle stream. I need to test whether that is possible.

[ProWo]

FFmpeg command to add a delay to ASS subtitles in an MKV container:

ffmpeg -i input.mkv -i input.ass -map 0 -map 1 -c copy -c:s ass -metadata:s:s:0 delay=1000 output.mkv

Ok, I've tested it.
It doesn't work this way.
Will implement the subtitle delay (negative or postitive) in the next nightly.

[videoAI]

@ProWo
v3.4.7.01

I used Clever's Multiplex feature today to Mux some files, It works well.

I mux-ed 25 files, each time copying the file name from the file system
(the Mux grid has no copy feature) to paste in the Movie title box.

Automation Request:
----------------------

Is it possible to save few clicks .. by:

1- Populate the Movie title box automatically [if no movie title found] by the file
name after the first drag n drop.

Or ..

2- Allow the same action mentioned above to occur manually by double clicking
the file name cell. This works well for multiple dragged files.

As always keep up your great work ..

Thank you

[ProWo]

Automation Request:

1- Populate the Movie title box automatically [if no movie title found] by the file
name after the first drag n drop.

Will implement this.

btw
Have you tested the subtitle delay?

[videoAI]

yes I have, subtitle delay works great, fixed my movie,
thank you for implementing ..

Automation Request:
1- Populate the Movie title box automatically [if no movie title found] by the file
name after the first drag n drop.

Will implement this.

Have you tested the subtitle delay?

[videoAI]

@ProWo
v3.4.7.01

FYI, I noticed that container 'set to' DAR does not change
to match the new source DAR of a new file after the previous
file is Mux-ed and removed from the grid.

ex: dragged 2 files to Mux grid:

file #1 source DAR =1.77, container DAR was set to 1.77, Mux-ed & removed,
file #2 new source DAR resets & changes to 2.40, but container DAR still shows set to 1.77
(does not get reset even when source file changes)

i had to keep an eye on it all the time .. fyi


[Attachment 89500 - Click to enlarge]

[videoAI]

@ProWo
v3.4.7.01

Another minor change ..

The new extract streams function
extracts audio streams into mka containers and
extracts video streams into mka containers also.
shouldn't those be extracted to mkv instead?

as you can see it becomes a bit difficult to tell them
apart in the grid, or at the file system.


[Attachment 89501 - Click to enlarge]

[Attachment 89502 - Click to enlarge]

[Attachment 89503 - Click to enlarge]

[ProWo]

The new extract streams function
extracts audio streams into mka containers and
extracts video streams into mka containers also.
shouldn't those be extracted to mkv instead?

Yes, of course.

EDIT: Found the bug. Is fixed in the next nightly.

[ProWo]

FYI, I noticed that container 'set to' DAR does not change
to match the new source DAR of a new file after the previous
file is Mux-ed and removed from the grid.

This isn't really a bug, because you can change the value as you wish.
But it can become a problem if you want to mux several videos with the whole grid option and want to set the DAR explicitly for all of them.
I'll change this the way, that the source DAR is automatically taken over.

[Findu]

@ Prowo

v3.4.7.01

Multiplex, Attachments:

When you select an image and/or font as an attachment for mkv, and then change container, the green color of the info text "Image & Font" could switch to red until you reselect mkv. Like for the chapters info text (availabel but no compatible container = red).

When you mux image and font, the former selections in the "Mux attachment" window get cleared, good, but the green “Image & Font” info text remains visible until you close the main page.

[Findu]

Could you restore the green info text for HRD source files in the title of the “Video Encoding” page?

And how about displaying other HRD information such as the selected LUT name and HDR setting such as “HLG to HDR10” there as well?
So there is one place where HDR information can be viewed, and users are already familiar with this "HDR" area from the main page.

[videoAI]

Thank you

The new extract streams function
shouldn't those be extracted to mkv instead?

Yes, of course.
EDIT: Found the bug. Is fixed in the next nightly.

[videoAI]

I have to go back and find out how many movies have incorrectly-saved container DAR now.

I was too focused on changing file containers, checking A/V/S delays, removing jibrish
from A/V stream's titles, adding SRT files in, and populating movie titles to notice defaulted
container DARs.

But I see your point.

Thanks for looking into it ..

FYI, container 'set to' DAR does not change

This isn't really a bug, [Y]
I'll change this the way, that the source DAR is automatically taken over. [Thx]

[ProWo]

Could you restore the green info text for HRD source files in the title of the “Video Encoding” page?

Is already there...

[ProWo]

I have to go back and find out how many movies have incorrectly-saved container DAR now.

I was too focused on changing file containers, checking A/V/S delays, removing jibrish
from A/V stream's titles, adding SRT files in, and populating movie titles to notice defaulted
container DARs.

But I see your point.

In general isn't necessary to set the DAR in muxing. So i would recommend to leave the setting "Not set".

[Findu]

>> Could you restore the green info text for HRD source files in the title of the “Video Encoding” page?
> Is already there...

Found the problem. HDR is only displayed at the “Video Encoding” page when you come directly from the main page. Not from other pages.

[videoAI]

I had a similar issue [but with Mux Movie Title] a while back ..

Found the problem. HDR is only displayed at the “Video Encoding” page when you
come directly from the main page. Not from other pages.

[videoAI]

@ProWo

FYI ..

https://forum.videohelp.com/threads/419356-Title-and-Countdown-timer-from-file#post2785523

[videoAI]

@ProWo
v3.4.7.01

Edit: The Audio stream has an issue, trying to fix it.

Edit 2:
it seems the audio stream [1] has an issue with the no of channels [0 channels].


[Attachment 89523 - Click to enlarge]
-------------------------------------------------------------
FFmpeg:
Could not find codec parameters for stream 1
(Audio: aac (mp4a / 0x6134706D), 24000 Hz, 0 channels, fltp, 94 kb/s)
unspecified number of channels

Edit #3
Clever 'scan for errors' shows this on the audio track

[aist#0:0/aac @ 00000271b8c4e740] [dec:aac @ 00000271b8c519c0]
Error while opening decoder: Operation not permitted
Error opening output file -.
Error opening output files: Operation not permitted

-------------------------------------------------------------

** Are you up for a challenge? !! **

I came across an mp4 movie that will not open in Clever ..
even though, as you can see, windows explorer loves the file and even generates a thumbnail for it.


[Attachment 89508 - Click to enlarge]

The movie does not open in losslesscut as well ..


[Attachment 89509 - Click to enlarge]

But it plays fine in mpc-be player, I can even enable subs and display Swedish subtitles.


[Attachment 89510 - Click to enlarge]

it even plays fine in my own media player ..


[Attachment 89511 - Click to enlarge]

** No playback problems whatsoever !! **

A while back I had a different issue with few videos in my collections
where the media hex signature was tampered with .. I ended up writing
a new program to detect media signature [1st 8-16 bytes] to detect
tampering. I call it Byte Editor.

I tested this movie with my Byte Editor, and it looks good.


[Attachment 89512 - Click to enlarge]

That's odd .. I even tried 2 versions of ffmpeg with it ..

The movie, according to media info, is a conformant mp4 container.
Here is more info:

General
Complete name : D:\VIDEO\Movies\Pink Panther.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom)
File size : 700 MiB
Duration : 1 h 50 min
Overall bit rate mode : Variable
Overall bit rate : 887 kb/s
Frame rate : 25.000 FPS
Encoded date : 2005-12-22 13:20:35 UTC
Tagged date : 2005-12-22 13:20:35 UTC

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings : CABAC / 16 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference fra : 16 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1 h 50 min
Bit rate : 789 kb/s
Maximum bit rate : 3 071 kb/s
Width : 608 pixels
Height : 256 pixels
Display aspect ratio : 2.39:1
Frame rate mode : Constant
Frame rate : 25.000 FPS
Original frame rate : 12.500 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.203
Stream size : 623 MiB (89%)
Writing library : x264 core 42 svn-388
Encoding settings : cabac=1 / ref=16 / deblock=1:-2:-2 / analyse=0x3:0x133 / me=umh / subme=6 / brdo=1 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / chroma_qp_offset=0 / slices=1 / bframes=3 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=2 / wpredb=1 / keyint=250 / keyint_min=25 / scenecut=40 / pass=2 / bitrate=789 / ratetol=1.0 / rceq='blurCplx^(1-qComp)' / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30
Encoded date : 2005-12-22 13:20:35 UTC
Tagged date : 2005-12-22 13:22:21 UTC
Codec configuration box : avcC

Audio
ID : 2
Format : AAC LC SBR
Format/Info : Advanced Audio Codec Low Complexity with Spectral Band Replication
Commercial name : HE-AAC
Format settings : Implicit
Codec ID : mp4a-67-2
Duration : 1 h 50 min
Bit rate mode : Variable
Bit rate : 96.0 kb/s
Maximum bit rate : 102 kb/s
Sampling rate : 48.0 kHz / 24.0 kHz
Frame rate : 23.438 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 74.8 MiB (11%)
Language : English
Encoded date : 2005-12-22 13:22:00 UTC
Tagged date : 2005-12-22 13:22:21 UTC

Text
ID : 3
Format : Timed Text
Codec ID : tx3g
Duration : 1 h 50 min
Bit rate mode : Variable
Bit rate : 47 b/s
Frame rate : 0.288 FPS
Stream size : 38.3 KiB (0%)
Language : Swedish
Forced : No
Encoded date : 2005-12-22 13:22:21 UTC
Tagged date : 2005-12-22 13:22:21 UTC
Count of events : 954

Menu
00:00:00.000 : Chapter 1
...
01:47:56.200 : Chapter 32

Potential bug .. with ffmpeg ??

ffprobe version N-121583-g4348bde2d2-20251031

ffprobe -v quiet -print_format json -show_format -show_streams "D:\VIDEO\Movies\Pink Panther.mp4"

generates no JSON file

ffprobe -show_format -show_streams -show_chapters "D:\VIDEO\Movies\Pink Panther.mp4"

generates this error:

[aac @ 000001d7d4f70b00] Sample rate index in program config element does not match the sample rate index configured by the container.
[aac @ 000001d7d4f70b00] decode_pce: Input buffer exhausted before END element found
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001d7d4efdf40] Failed to open codec in avformat_find_stream_info
[aac @ 000001d7d4f70b00] Sample rate index in program config element does not match the sample rate index configured by the container.
[aac @ 000001d7d4f70b00] decode_pce: Input buffer exhausted before END element found
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001d7d4efdf40] Could not find codec parameters for stream 1 (Audio: aac (mp4a / 0x6134706D), 24000 Hz, 0 channels, fltp, 94 kb/s): unspecified number of channels
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\VIDEO\Movies\Pink Panther.mp4':
Metadata:
major_brand : isom
minor_version : 1
compatible_brands: isom
creation_time : 2005-12-22T13:20:35.000000Z
Duration: 01:50:23.57, start: 0.000000, bitrate: 886 kb/s
Chapters:
Chapter #0:0: start 0.000000, end 285.600000
Metadata:
title : Chapter 1
Chapter #0:1: start 285.600000, end 389.120000
Metadata:
...
Metadata:
title : Chapter 32
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 608x256, 789 kb/s, 25 fps, 25 tbr, 25 tbn, start 0.080000 (default)
Metadata:
creation_time : 2005-12-22T13:20:35.000000Z
handler_name : GPAC ISO Video Handler
vendor_id : [0][0][0][0]
Stream #0:1[0x2](eng): Audio: aac (mp4a / 0x6134706D), 24000 Hz, 0 channels, fltp, 94 kb/s (default)
Metadata:
creation_time : 2005-12-22T13:22:00.000000Z
handler_name : GPAC ISO Audio Handler
vendor_id : [0][0][0][0]
Stream #0:2[0x3](swe): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s (default)
Metadata:
creation_time : 2005-12-22T13:22:21.000000Z
handler_name : GPAC Streaming Text Handler
[aac @ 000001d7d4f887c0] Sample rate index in program config element does not match the sample rate index configured by the container.
[aac @ 000001d7d4f887c0] decode_pce: Input buffer exhausted before END element found
Could not open codec for input stream 1

So error was :
Could not open codec for input stream 1

and potential remedy was :
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options

Increasing 'analyzeduration' and 'probesize' :

ffprobe -analyzeduration 100000000 -probesize 100000000 -show_format -show_streams -show_chapters "D:\VIDEO\Movies\Pink Panther.mp4"

still generated errors ...

[aac @ 00000248a08d1ac0] Sample rate index in program config element does not match the sample rate index configured by the container.
[aac @ 00000248a08d1ac0] decode_pce: Input buffer exhausted before END element found
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000248a08cdc00] Failed to open codec in avformat_find_stream_info
[aac @ 00000248a08d1ac0] Sample rate index in program config element does not match the sample rate index configured by the container.
[aac @ 00000248a08d1ac0] decode_pce: Input buffer exhausted before END element found
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000248a08cdc00] Could not find codec parameters for stream 1 (Audio: aac (mp4a / 0x6134706D), 24000 Hz, 0 channels, fltp, 94 kb/s): unspecified number of channels
Consider increasing the value for the 'analyzeduration' (100000000) and 'probesize' (100000000) options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\VIDEO\Movies\Pink Panther.mp4':
Metadata:
major_brand : isom
minor_version : 1
compatible_brands: isom
creation_time : 2005-12-22T13:20:35.000000Z
Duration: 01:50:23.57, start: 0.000000, bitrate: 886 kb/s
Chapters:
Chapter #0:0: start 0.000000, end 285.600000
Metadata:
title : Chapter 1
Chapter #0:1: start 285.600000, end 389.120000
...
title : Chapter 32

Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661),
Metadata:
creation_time : 2005-12-22T13:20:35.000000Z
handler_name : GPAC ISO Video Handler
vendor_id : [0][0][0][0]
Stream #0:1[0x2](eng): Audio: aac (mp4a / 0x6134706D), 24000 Hz, 0 channels, fltp, 94 kb/s (default)
Metadata:
creation_time : 2005-12-22T13:22:00.000000Z
handler_name : GPAC ISO Audio Handler
vendor_id : [0][0][0][0]
Stream #0:2[0x3](swe): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s (default)
Metadata:
creation_time : 2005-12-22T13:22:21.000000Z
handler_name : GPAC Streaming Text Handler
[aac @ 00000248a0916c00] Sample rate index in program config element does not match the sample rate index configured by the container.
[aac @ 00000248a0916c00] decode_pce: Input buffer exhausted before END element found
Could not open codec for input stream 1

Summary: FFmpeg can't inspect or open stream 1 [AAC Audio stream] in the file
and keeps asking me to increase 'input buffer,' analyze duration', and 'probe size'.

[ProWo]

Could you upload this video to a hoster and post the download link here?

[videoAI]

No need, I figured out the issue.

ffmpeg chokes on this movie file because the audio has 0 channels.

I extracted the video and the audio streams separately, clever can load the video
but not the audio stream.

no ffmpeg front end can read the audio stream with 0 channels, even
though players can play the movie [both streams] fine. I tried many programs
and even online converters, they all give errors trying to read, mux, or convert
the audio stream.

I have yet to find a program that can mux or convert 0 channel audio
stream. Will update when I do.

Could you upload this video to a hoster and post the download link here?